ASAHIKASEI › DURANATE™ TKA 100 DURANATE™ TKA 100 $0.00 DURANATE™ TKA 100 is a hexamethylene diisocyanate (HDI) trimer. Acts as a curing agent for urethanes. Add To Cart Added! DURANATE™ TKA 100 is a hexamethylene diisocyanate (HDI) trimer. Acts as a curing agent for urethanes. You Might Also Like DURANATE™ E402 100 DURANATE™ 24A 100 DURANATE™ TKA 90SB DURANATE™ 22A 75PX DURANATE™ TPA 100